2 cups fresh peas, cooked (if using frozen, rinse under cool water to thaw)
8 cups chicken stock, heated
5 tablespoons extra-virgin olive oil, plus more for drizzling
1 stalk celery, finely chopped
1/4 cup finely chopped shallots
2 cups Arborio rice
1 cup dry white wine
Kosher salt and freshly ground black pepper
3 tablespoons butter, room temperature
1/2 cup grated Parmesan
1 pound diver scallops